System Description

Chapter 7 - Customer Interface Adaptors
MCIL -WIPLL-SDN_R1_40 Marconi Communications Ltd. 7-7 of 7-8
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10baseT, ANSI/IEEE 802.3
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48Vdc, 50W
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RJ-11 telephone sockets
To the Ethernet:
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RJ-45 connector
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10-BaseT, ANSI/IEEE 802.3
Figure 7-3: Subscriber Data and Telephony Adapter (SDTA)
The SDTA includes lightning arrestors to protect the customer's local network from
lightning. The SDTA is connected to a standard power outlet (110-240vAC). Units
are generally installed indoors in a communications cabinet or mounted on a wall.
An SDTA can also be placed on a table or shelf next to the customer's
communications equipment.